Do powercords make a difference in sound?

hi rrog:

when something sounds good, where audiophiles are involved, there is usually some disagreement. what constitutes "good" sound is subjective, so, i repeat, undeniable and opinion are oxymorons.

I guess I've always had equipment with good power supplies.

It is really ridiculous when the
"disbelievers" start speaking like politicians who have been asked a direct question then never actually address an applicable answer.
Here it is folks, it is undeniable, it is not opinion, it is not subject to interpretation...
A well designed aftermarket powercord when compared to a typical stock powercord [in an adequately resolving system which many/most of us already have ] can be readily distinguished from the stock cable repeatedly and consistently in blind testing over and over again. I have made this claim on previous threads about this and will re-state it again: thousands of audiophiles do this all the time...it is what helps them choose WHICH aftermarket cable they are going to spend their hard earned money ON...
This is a fact. Repeatedly choosing the correct cable 100% of the time (as I can in my system) is proof that powercords are audibly different from each other.
Period. Argument over.

I sell aftermarket power cables because I absolutely feel they make a difference. However, how much of a difference they make is very system dependent. In my system, which is quite resolving, they actually make less of a difference than in some others because I already have excellent power with a dedicated line, very high quality outlet on this line, and an excellent line conditioner. Also one of my main components, the Bel Canto DAC3.5VB is fed by their VBS1 power supply, so a high quality power cord on this power supply would be a waste, in my opinion. However, when someone hears the difference that something like the VBS1 power supply makes, even in a system that already has very good power, it's hard to dismiss the importance of good power delivery. Aftermarket power cords do work, but how much you may or may not notice is based on many factors.

08-15-11: Almarg
2)The differences reflect interactions between power cord characteristics, the characteristics of the particular incoming AC, and the particular components in the particular system, especially their power supplies.

3)There is no reason to expect much if any consistency of those interactions from system to system, and therefore no reason to expect much if any consistency or predictability of the sonic effects of a particular power cord.

4)While a power cord may have effects on the tonality of any given system, it is incorrect to attribute tonal characteristics to a power cord, because those tonal effects will vary from system to system.

It seems to me that, in the comments above, Al has identified one of the most recurring flaws in the thinking of many audiophiles, namely that…

If using component X results in audible difference Y, then audible difference Y is attributable to component X.

On the face of it, this statement appears to be not only true, but self evident. But under quite common circumstances, it is false. Specifically, it’s false when the audible difference resulting from the use of a component is an EXTRINSIC characteristic of that component.

An extrinsic characteristic is one that a thing has only IN RELATION TO other things. An intrinsic characteristic is one that a thing has INDEPENDENT OF other things. For example, mass is an intrinsic characteristic, weight is an extrinsic characteristic.

Judging from many posts I have seen on A’gon, there is a widespread tendency to believe that a component’s audible characteristic are INTRINSIC, even in cases where there is good reason to believe that they are EXTRINSIC. Al nicely summarized why the audible characteristics of power cords are largely extrinsic, but it seems to me that the same thing can be said of other types of components.

The tendency to regard a thing’s characteristics as intrinsic is a kind of “localization fallacy,” that is, a failure to recognize the characteristic’s dependence on the external things with which it interacts.

For the record, I’m guilty of the fallacy I’m describing, so I’m not casting stones. Just pointing out something that, I believe, results in needless confusion and disagreement here on A’gon. I suspect that the tendency to regard a thing’s characteristics as intrinsic is an inherent human bias. In any case, it seems to be an inherent audiophile bias.

FWIW.

Bryon